Flow meter



FLOWMETB R Filed Janv 25. 1923 G. P. LUCKEY NTI."

June 7 1927.

Patented June 7, 192.7.

UNITED STATES G EOBGE P. LUCKEY, F DAYTON', OHIO.

FLOW vMETER.

v Application med January 26, 1923. Serial No. 615,093.

tion, combination and arrangement hereinl fully described, illustrated and claimed.

In the accompanying drawings- Figure 1 is a diametrical section through the improved lowmeter;

Figure 2 is a cross -section thereof taken on line 2-2 of Figure 1.

Inlfthe illustrated embodiment of the -invention, I employ a tubular casing including a transparent cylindrical tube 5 of such material as glass or Celluloid, at the extremities of whichv are headers 6 and 7 rabbeted to receive the tube 5, the latter being cemented or otherwise fastened therein. The headers are terminally reduced in ,diameter and threaded, as shown. to enable the casing to v be coupled to any service ipe.

Extending longitudina ly and centrally of the tube 5 is a guide 8, such as a rod or wire,

attached lixedly at its extremities to su porting arms 9 and 10 within the hea ers 6 and 7.

Movable along the guide 8-is a body 11 the weight of which is e ualv to that of an cqual volume of the liqui passing through the casing of the lowmeter. The body 11 is moved in the direction of flow of the liquid by the friction or drag of the liquid on said body. The body 11 is however restrained by a coiled spring 12', one end 'of which is attached to said -body and the other end to the arm 10. The bodyl 11 rests at.

the zero point against spider like stop pro- )ections 13v1nside of the header 7. y

As the body 11 is moved along the guide 8,

it registers with graduations 14 on the tube 5 and thereby indicates the rate of flow of the liquid through the casing of the flowmeter.

, The action of the body 11, and, therefore, the flowmeter, is controlled by the viscosity and friction of the liquid passing throu l1 the flowmeter. The amount of motlon of t e bodv 11 is the measure of rapidity of flow of the liquid. Due to the fact that the Weight of the body 11 is the same as an equal volume of the liquid the lowmeter is free from the effects of gravity so that it will indicate equally well in all positions inde endent of the force of gravity.

1. In a llowmeter for liquids, a graduated transparent tubular cylinder of unlform diameter, a body having the same specific gravityas that of the liquid passing'through the cylinder and movable lon itudinally of and 'within said cylinder by tie friction of the liquid flowing therethrough, and a spring of progressively increasing force to resist such movement of said body.

2. In a lowmeter for liquids, a tubular casing of uniform diameter, a body movable longitudinally within said casing by the friction of the'liquid flowing through the casing, said body being of the same weight as an equal volume of said liquid, and mechanical means for resisting such movement of the body with progressively increasing force. f

3. In a lowmeter for liquids, a tubular casing of uniform diameter, a body movable longitudinally within said casing by the friction of the liquid flowing through the casing, said body being of the same weight as an equal volume of said liquid, aguide for said body extending axially of the casing, and mec anical means for resisting such movement of the body with progressively increasin force. l

In testimony whereof I ax my signature.

GEORGE P. LUCKEY. 

